NC0027197_Environmental Assessment_19921001

NPDES DOCIMENT SCANNING, COVER :SHEET
Permit:
NC0027197
Shelby WTP
NPDES
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Renewal Application
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
October 1, 1992
This document is printed an reuse paper - ignore any
content on the re Terse side

DIVISION OF ENVIRONMENTAL MANAGEMENT
October 1, 1992
MEMORANDUM
TO: Monica Swihart
THRU: J. Trevor Clement
Carla Sanderson
FROM: Jacquelyn M. Nowell Sth
SUBJECT: Comments on the Revised Environmental Assessment - City of Shelby
WTP Upgrade
Cleveland County
The Technical Support Branch has reviewed the revised document for the
expansion of the Shelby Water Treatment Plant (WTP). In our August 20, 1992 letter
on the environmental assessment, we recommended that the City of Shelby should
determine the impact of the water treatment plant's increased water withdrawal
on downstream NPDES dischargers. If the 7Q10 flow would not be maintained down-
stream, effluent limitations for Shelby's Wastewater Treatment Plant (WWTP) and
other dischargers could be more stringent. In the revised assessment in Section
IV. Environmental Consequences, K. Fish Habitat, our concerns on the reduction
of 7Q10 flow at the Shelby WWTP due to the increased water withdrawal were
noted. It was also stated that the City of Shelby would officially request that
DEM assess the possibility of more stringent limits.
We recommend the completion of the requested review prior to the expansion
of the WTP. This would insure that the City of Shelby is fully cognizant of
potential modifications .for limits of oxygen -consuming parameters, toxicants,
metals, etc. discharged from the WWTP. Future planning decisions for both
treatment plants could then be made with knowledge of their interaction.
If there are any additional questions, please contact me.
cc: Rex Gleason
Central Files

DIVISION OF ENVIRONMENTAL MANAGEMENT
August 20, 1992
MEMORANDUM
TO: Monica Swihart
THRU: Ruth SwanekS
FROM: Jacquelyn M. Nowell
SUBJECT: City of Shelby WTP Upgrade - Environmental Assessment
Cleveland County
The Technical Support Branch has reviewed the subject document for the
expansion of the Shelby Water Treatment Plant and submits the following comment.
The City of Shelby should determine the impact of the additional water
withdrawal from the First Broad River on downstream NPDES dischargers. An
expansion of the water treatment plant from 10 MGD to 18 MGD is a substantial
increase. Information from Water Resources indicates that if the expansion
occurs, the 7Q10 flow will not be maintained downstream of the intake. Effluent
limitations for NPDES dischargers on the First Broad River, i.e. the Shelby -
Broad River Wastewater Treatment Plant, were determined using the 7Q10 flow
as designated by USGS. Any decrease of the 7Q10 flow could have implications on
the future effluent limits of dischargers and more than likely more stringent
limits would be applied to protect water quality.
The City should contact the Division of Environmental Management to look at
the possibility of tighter limits on downstream dischargers because of this pro-
ject.
Please contact me if there are any questions.
cc: Rex Gleason
Central Files

G
M
Department of Environment, Health, and Natural Resources
Division of Planning and Assessment
Project Review Form
❑ Project located in 7th floor library
Project Number. 40S/1
County:
C_., fir -Aft
Date:
4/2jT2-
Date Response D (firm de,dline):
aco
- This project is being reviewed as indicated below:
Regional Office/Phone
Regional Office Area
In -House Review
❑ Asheville
❑ Fayetteville
16Mooresville
Raleigh
❑ Washington
❑ Wilmington
❑ Winston-Salem
❑ All Ft/0 Areas
Air
ater
roundwater
d Quality Engineer
Recreational Consultant.' •
® Coastal Management Consultant
not
•ry
J
Manager Sign-Off/Region:
AUG 13 1992
WAT.E't ` Date:
SECTION
❑ Soil and Water
❑ Coastal Management
❑ Water Resources
4Wildlife
Forest Resources
❑ Land Resources
Parks and Recreation
Environmental Management
. a. e'
❑ Marine Fisheries
NA Water Planning
❑ Environmental Health
❑ Solid Waste Management
D Radiation Protection
❑ David Foster
❑ Other (specify)
In -House Reviewer/Agency:
Response (check all applicable)
Regional Office response to be compiled and completed by Regional Manager. In -House Reviewer complete individual response.
❑ No objection to project as proposed
0 No Comment
❑ Insufficient information to complete review
❑ Approve
❑ Permit(s) needed (permit files have been checked)
0 Recommended for further development with recommendations for
strengthening (comments attached)
0 Recommended for further development if specific & substantive
changes incorporated by funding agency (comments
attachedlauthority(ies) cited)
❑ Not recommended for further development for reason:
stated in attached comments (authority(ies) cited)
❑ Applicant has been contacted
❑ Applicant has not been contacted
❑ Project Controversial (comments attached)
❑ Consistency Statement needed (comments attached)
❑ Consistency Statement not needed
❑ Full EIS must be required under the provisions of
NEPA and SEPA
❑ Other (specify and attach comments)
RETURN TO:
Melba McGee
, Division of Planning and Assessment by Due Date shown.

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